Method and apparatus for reducing power consumption in mobile device

ABSTRACT

A method and apparatus capable of minimizing power consumption occurring when a mobile device is changed from a sleep state to a wake-up state by partially controlling on/off of a display unit and partial booting control of a system function are provided. The method includes detecting a change of the mobile device from a sleep state to a wake-up state, turning on a display unit of the mobile device such that a first section of the mobile device displays an operating region, the first section including one or more portions of the display unit and less than an entire screen of the display unit and waiting for a system function registered in the operating region.

PRIORITY

This application claims the benefit under 35 U.S.C. §119(a) of a Koreanpatent application filed on Sep. 29, 2010 in the Korean IntellectualProperty Office and assigned Serial No. 10-2010-0094432, the entiredisclosure of which is hereby incorporated by reference.

BACKGROUND OF THE INVENTION

1. Field of the Invention

The present invention relates to a method and an apparatus for reducingpower consumption in a mobile device. More particularly, the presentinvention relates to a method for minimizing unnecessary powerconsumption and misuse of a resource when a mobile device is changedfrom a sleep state to a wake-up state, and a mobile device supportingthe same.

2. Description of the Related Art

In recent years, with significant development of information technology,communication technology, and semiconductor technology, supply and useof all types of portable terminals have rapidly increased. Recentportable terminals provide traditional voice services as well asadditional services. In addition to voice services, recent mobilecommunication terminals may provide various functions, such as a TVwatching function (e.g., mobile broadcasting such as Digital MultimediaBroadcasting (DMB) or Digital Video Broadcasting (DVB)), a music playingfunction, a photographing function, and an Internet access function.

Mobile device generally use battery power, which is limited according tothe battery capacity. A battery used in the mobile device supplies powerfor an operation of the mobile device. If the remaining capacity of thebattery power is reduced lower than a predetermined level, additionalsupply of power stops to protect the mobile device.

However, as recent mobile devices have an advantage of mobility, powerconservation of the mobile device has become an important consideration.A continuous operation of a display unit of the mobile device causesincrease in power consumption. Therefore, there is a need fortechnologies capable of improving power consumption according to theoperation of the display unit.

SUMMARY OF THE INVENTION

Aspects of the present invention are to address at least theabove-mentioned problems and/or disadvantages and to provide at leastthe advantages described below. Accordingly, an aspect of the presentinvention is to provide a method capable of minimizing power consumptionto increase the duration of a battery in the mobile device.

Another aspect of the present invention is to provide a method forreducing power consumption of a mobile device capable of reducing powerconsumption according to driving of a display unit and a system throughan operation of a system due to a power saving mode when the mobiledevice is changed from a sleep state to a wake-up state, and anapparatus thereof.

Another aspect of the present invention is to provide a method forimplementing a small operation region by partially turning-on/off of adisplay unit, reducing unnecessary power consumption and a resource bystand-by of a system function to the minimum according to a user settingmenu when a mobile device is changed from a sleep state to a wake-upstate, thereby minimizing power consumption of a mobile device, and anapparatus thereof.

Another aspect of the present invention is to improve utilization andconvenience of a mobile device by implementing an optimal environmentfor power consumption by diving of a system to the minimum when themobile device is changed to a wake-up state.

In accordance with an aspect of the present invention, a method forreducing power consumption in a mobile device is provided. The methodincludes detecting a change of the mobile device from a sleep state to awake-up state, partially turning-on a display unit of the mobile devicesuch that a first section of the display unit displays an operatingregion, the first section comprising one or more portions of the displayunit and less than an entire screen of the display unit, and waiting fora system function registered in the operating region.

In accordance with another aspect of the present invention, a method forreducing power consumption in a mobile device is provided. The methodincludes detecting an interaction for a change from a sleep state of themobile terminal to the wake-up state, determining whether theinteraction is a wake-up change interaction according to a power savingmode or a general mode when the interaction is detected, turning on anentire screen of a display unit to display an operating region based ona general mode when the corresponding interaction is wake-up changeinteraction according to the general mode, turning on only a firstsection of the display unit to display an operating region based on apower saving mode when the corresponding interaction is wake-up changeinteraction according to the power saving mode, the first sectioncomprising one or more portions of the display unit and less than anentire screen of the display unit, and waiting for a system functionregistered in an operating region based on the power saving mode.

In accordance with another aspect of the present invention, a recordingmedium readable by a computer in which a program which enables toexecute the method in a processor is provided.

In accordance with another aspect of the present invention, an apparatusfor reducing power consumption in a mobile device is provided. Theapparatus includes a display unit for displaying a first section of thedisplay unit when the mobile device is changed from a sleep state to awake-up state according to a power saving mode, the first sectioncomprising one or more portions of the display unit and less than anentire screen of the display unit and a controller for turning on afirst section of the display unit when an interaction for wake-up statechange is detected, and for waiting for only a partial preset systemfunction to control wake-up state change based on a power saving mode.

In accordance with another aspect of the present invention, a method ofreducing power consumption in a mobile device is provided. The methodincludes determining whether an input for changing from a sleep state toa wake-up state is received, when the mobile device is operating in apower saving mode, turning on only a first section of a display unit ofthe mobile device, and displaying a predetermined user interface in thefirst section, while not turning on a remaining section of the displayunit, and when the mobile device is not operating in the power savingmode, turning on the entire display unit of the mobile device, anddisplaying a predetermined user interface on a screen of the displayunit, wherein the first section includes one or more portions of thedisplay unit and less than an entire screen of the display unit, and theremaining section includes any portions of the display unit that are notpart of the first section.

As illustrated above, in a method and an apparatus for reducing powerconsumption of a mobile device, when the mobile device is changed from asleep state to a wake-up state, the mobile device may drive only a smalloperation region by turning-on/off a part of a display unit. Further,the mobile device may change only a predetermined system function to astand-by state according to a user setting menu when the mobile deviceis changed to a wake-up state. When a mobile device changes to a wake-upstate, power consumption according to an operation of a display unit maybe reduced, and unnecessary resource and power consumption according todriving of the system may be reduced. As a result, power consumption andresource consumption generated when the mobile device is changed from asleep state to a wake-up state may be minimized.

In accordance with an aspect of the present invention, a display unit isturned-off and a function of a system may be changed from a sleep statebeing a non-driving state to an on-state of the display unit to minimizepower consumption generated when a set function of the system is changedto a driven wake state.

In accordance with an aspect of the present invention, when the mobiledevice is changed from the sleep state to a wake-up state, the displayunit may be partially turned-on/off to separately drive a non-operatingregion and an operating region. When the mobile device is changed to thewake-up state, the mobile device may be changed to a stand-by state foronly a defined certain system function (e.g., function corresponding toat least one item displayed on the operating region according to a usersetting menu).

Accordingly, when a mobile device wakes-up, an unnecessary resourcegenerated according to entering on of a display unit and a stand-bystate of a system may be reduced. As a result, an optimal environmentmay be implemented that is capable of minimizing power consumption of amobile device. Therefore power consumption of a mobile device may beminimized, thereby improving utilization, convenience, and competitiveforce of the mobile device.

Other aspects, advantages, and salient features of the invention willbecome apparent to those skilled in the art from the following detaileddescription, which, taken in conjunction with the annexed drawings,discloses exemplary embodiments of the invention.

BRIEF DESCRIPTION OF THE DRAWINGS

The above and other aspects, features, and advantages of certainexemplary embodiments of the present invention will be more apparentfrom the following description in conjunction with the accompanyingdrawings, in which:

FIG. 1 is a block diagram illustrating a configuration of a mobiledevice according to an exemplary embodiment of the present invention;

FIG. 2 is a view illustrating an operation of a mobile device when themobile device is changed to a wake-up state according to an exemplaryembodiment of the present invention; and

FIG. 3 is a flowchart illustrating a control operation of a mobiledevice for reducing power consumption when the mobile device wakes upaccording to an exemplary embodiment of the present invention.

Throughout the drawings, it should be noted that like reference numbersare used to depict the same or similar elements, features, andstructures.

DETAILED DESCRIPTION OF EXEMPLARY EMBODIMENTS

The following description with reference to the accompanying drawings isprovided to assist in a comprehensive understanding of exemplaryembodiments of the invention as defined by the claims and theirequivalents. It includes various specific details to assist in thatunderstanding, but these are to be regarded as merely exemplary.Accordingly, those of ordinary skill in the art will recognize thatvarious changes and modifications of the embodiments described hereincan be made without departing from the scope and spirit of theinvention. In addition, descriptions of well-known functions andconstructions may be omitted for clarity and conciseness.

The terms and words used in the following description and claims are notlimited to the bibliographical meanings, but are merely used by theinventor to enable a clear and consistent understanding of theinvention. Accordingly, it should be apparent to those skilled in theart that the following description of exemplary embodiments of thepresent invention is provided for illustration purposes only and not forthe purpose of limiting the invention as defined by the appended claimsand their equivalents.

It is to be understood that the singular forms “a,” “an,” and “the”include plural referents unless the context clearly dictates otherwise.Thus, for example, reference to “a component surface” includes referenceto one or more of such surfaces.

Exemplary embodiments of the present invention relate to a methodcapable of minimizing unnecessary power consumption when operating adisplay unit of a mobile device, and an apparatus supporting the same.Exemplary embodiments of the present invention may minimize powerconsumption when a mobile device is changed from a sleep state to awake-up state. When the mobile device is changed from a sleep state to awake-up state, the mobile device may partially turn-on/off a displayunit to separately display a non-operating region and an operatingregion. When the mobile device is changed to the wake-up state, apreviously defined function (e.g., a function corresponding to at leastone item allotted to the operating region according to a user settingmenu) enters a stand-by state. Accordingly, the mobile device maypartially turn on a display unit and enter a partial stand-by state of asystem function when the mobile device wakes up to reduce unnecessarypower consumption. The sleep state denotes a non-driving state in whicha display unit of a mobile device is turned-off and system functions arenot operated. The wake-up state denotes a state in which the displayunit is changed to an on state to drive at least one set systemfunction.

A mobile device and an operation control method thereof according to anexemplary embodiment of the present invention are described below withreference to accompanying drawings. However, a configuration of a mobiledevice and an operation control method thereof are not limited tofollowing exemplary embodiments, and it should be clearly understoodthat the present invention is applicable to various exemplaryembodiments.

FIG. 1 is a block diagram illustrating a configuration of a mobiledevice according to an exemplary embodiment of the present invention.

Referring to FIG. 1, the mobile device includes a display unit 100, amemory 200, and a controller 300. The mobile device may also includesadditional units, such as a Radio Frequency (RF) unit performing acommunication function, an audio processing unit including a microphoneand a speaker, a digital broadcasting module performing reception andplayback of digital broadcasting (e.g., mobile broadcasting such asDigital Multimedia Broadcasting (DMB) Digital Video Broadcasting (DVB)),a camera module, a BLUETOOTH communication module performing a BLUETOOTHcommunication function, an Internet communication module performing anInternet communication function, a touch pad for touch based input, aninput unit supporting physical key input, and a battery supplying powerto the structural elements of the mobile device.

The display unit 100 provides an execution screen of applicationssupported by the mobile device as well as a home screen of the mobiledevice. For example, the display unit 100 may provide execution screensfor a message function, an electronic mail function, an Internetfunction, a multi-media function, a search function, a communicationfunction, an electronic book (e.g., e-book), camera functions,photograph/moving image playing functions, a TV playback function (e.g.,playback function of mobile broadcasting such as DMB or DVB), a musicplayback function, a widget function, a memo function, and a gamefunction.

The display unit 100 may be Liquid Crystal Display (LCD). However, otherdisplay devices may also be used, such as a Light Emitting Diode (LED),an Organic LED (OLED), or an Active Matrix OLED) (AMOLED). Whendisplaying the execution screen, the display unit 100 may provide ahorizontal mode or a vertical mode according to an orientation of themobile device.

The display unit 100 may include an interface supporting touch basedinput. For example, the display unit 100 may support touch based userinteraction input by a touch-screen configuration, and generate andtransfer an input signal according to the user interaction input to thecontroller 300.

The display unit 100 may separately provide an operating region and anon-operating region by partially turning on or off sections of thedisplay unit 100 when the mobile device is changed from a sleep state toa wake-up state. The display unit 100 may turn-on some sections of ascreen and turn off remaining sections when the mobile device is changedto a wake-up state according to a power saving mode. The display unit100 may display at least one item corresponding to a user setting menuon an operating region when the display unit 100 is partially turned on.An operation method according to partial on/off of the display unit 100is described below.

The memory 200 stores various programs and data executed and processedby the mobile device. The memory 200 may be configured by at least onevolatile memory device and non-volatile memory device. For example, thememory 200 may continuously or temporarily store an operating system ofthe mobile device, programs and data associated with a display controloperation of the display unit 100, programs and data associated with aninput control operation using the display unit 100, programs and dataassociated with an operation changed to a wake-up state when interactionis detected in a sleep state of the mobile device, programs and dataassociated with an operation of the display unit 100 when the mobiledevice is changed from the sleep state to a wake-up state, and programsand data associated with a stand-by state operation with respect tofunctions set when the mobile device is changed from the sleep state tothe wake-up state.

The memory 200 may store setting information for operation schemes forreducing power consumption of the mobile device. For example, the memory200 may store setting information according to activation anddeactivation of a power saving mode, setting information with respect toitems displayed on an operating region in the power saving mode, settinginformation about a type of interaction for the power saving mode, andsetting information with respect to a location of an operating regiondisplayed on the display unit 100 in the power saving mode.

The controller 300 controls overall operations of the mobile device. Thecontroller 300 may control an operation associated with a power savingmode operation for reducing power consumption. For example, thecontroller 300 may detect interaction in which the display unit 100 isturned on in a sleep state of the mobile device. When interactionaccording to turning on of the display unit 100 is detected, thecontroller 300 changes the mobile device from a sleep state to a wake-upstate. When the mobile device is changed to the wake-up state, thecontroller 300 controls partial on/off of the display unit 100 accordingto a power saving mode to separately display a non-operating region andan operating region. Further, the controller 300 controls the display ofitems corresponding to a previously registered user menu in theoperating region. The controller 300 controls a stand-by state forexecuting a function with respect to only predetermined functionscorresponding to a menu item of the items.

A control operation of the controller 300 is described below withrespect to a control method. The controller 300 may also perform variouscontrol operations associated with a general function of the mobiledevice. When executing an application, the controller 300 may control anoperation of the mobile device and data display. Further, the controller300 may receive an input signal corresponding to various input schemessupported from a touch based input interface and control a functionoperation according thereto. The controller 300 may control an operationin a power saving mode with respect to predetermined system functionsregistered in an operating region after driving a system according to apower saving mode. The controller 300 may change a mode to a generalmode according to input interaction after driving a system in a powersaving mode and control a system operation according thereto.

The mobile device may be configured as a bar type, a folder type, aslide type, a swing type, and a flip type. The mobile device may be anyof a variety of information communication devices, multi-media devices,and application devices with respect thereto. For example, the mobiledevice may be a Personal Computer (PC), a smart phone, a PortableMultimedia Player (PMP), a digital broadcasting player, a PersonalDigital Assistant (PDA), a music player, a portable game terminal, anotebook computer, a netbook computer as well as a mobile communicationterminal operated based on respective communication protocolscorresponding to various communication systems.

FIG. 2 is a view illustrating an operation of a mobile device when it ischanged to a wake-up state according to an exemplary embodiment of thepresent invention.

Referring to FIG. 2, in state 201, the mobile device is in a sleep stateand the display unit 100 is turned off. The mobile device may be changedfrom a sleep state to a wake-up state according to external interaction,and the display unit 100 may be turned on. For example, the controller300 may control change of the mobile device from the sleep state to awake-up state according to user input based interaction and turning-onof the display unit 100. The controller 300 may control change of themobile device from a sleep state to a wake-up state according tocommunication event based interaction received from an exterior andturning-on of the display unit 100.

If external interaction is input as illustrated above, a display unit100 is turned-on corresponding to change of a wake-up state in state205, and a corresponding screen (e.g., a home screen or a power savinghome screen) may be displayed. For example, the controller 300 mayidentify a setting state of a power saving mode when the mobile deviceis changed from a state of reference numeral 201 to a wake-up statecorresponding to external interaction. The controller 300 may determinewhether a power saving mode is activated or deactivated.

If the power saving mode is deactivated, the controller 300 may controlwake-up state change according to a general mode. For example, thecontroller 300 may display a home screen with the entire screen of thedisplay unit 100 in state 203. The controller 300 turns on the entiredisplay unit 100 and uses the entire screen as an operating region. Thecontroller 300 controls entering a stand-by state with all appropriatesystem functions operating in the mobile device.

When the power saving mode is activated, the controller 300 may controlwake-up state change according to the power saving mode. For example,the controller 300 may display a power saving home screen as a partialscreen of the display unit 100 in state 205. The controller 300 uses apartial section of the display unit 100 as the operating region 600, andremaining sections as the non-operating region 500. The controller 300controls stand-by entry with respect to predetermined system functionsallotted to a power saving home screen of the operating region 600 amongall system functions operated by the mobile device.

In state 205, when the mobile device is changed to a wake-up stateaccording to a power saving mode, the display unit 100 may turn on asection (or portion) of the display unit 100 and maintain the remainingsections (or portions) in an off state. Accordingly, the display unit100 may display a region in an off state as the non-operating region 500and a region in an on state as the operating region 600.

The operating region 600 may be divided into a state information region700 and a menu region 800. The state information region 700 is a regionindicating state information of a mobile device. Predetermined presetstate information items such as weather, time, and a residual amount ofa battery may be provided to the state information region 700. The menuregion 800 is a region indicating menu items of a predetermined numberof functions, such as a user setting menu, among system functionsoperated in the mobile device. The menu item indicates the operatingregion 600 (in particular, displayed on the menu region 800) accordingto the user setting menu. The menu item indicates an item for executinga corresponding mapped function. The state information region 700 or themenu region 800 may be selectively omitted according to user setting.

FIG. 2 illustrates partial on/off of the display unit 100 according to apower saving mode set in a method for reducing power consumptionaccording to an exemplary embodiment of the present invention, andaccordingly to support driving of a system due to stand-by of functionsregistered in the operating region 600. However, the mobile device maychange to a wake-up state according to a power saving mode in aninteraction input scheme of a user using the mobile device regardless ofa state of the power saving mode.

For example, one function a mobile device may be designated as afunction key (referred to as ‘power saving mode’ hereinafter). A wake-upstate change according to a general mode with respect to interactionother than a power saving mode key may be employed. The wake-up statechange according to a power saving mode with respect to interactionbased on power saving key may be employed. One function key (e.g., hotkey) may be designated as a key for an operation of an exemplaryembodiment of the present invention. Wake-up state change due to ageneral mode and a power saving mode may be supported according to aninput scheme (e.g., a short press or a long press) of the certainfunction key.

When interaction for changing the mobile device from a sleep state to awake-up state is input, wake up state change due to a power saving modemay be supported according to an activation setting state of the powersaving mode. When interaction for changing the mobile device from asleep state to a wake-up state is input, the wake-up state change in apower saving mode may occur according to whether a correspondinginteraction is a wake-up change interaction (e.g., an interactionaccording to a power saving mode key or an interaction according to ahot key short press) in a power saving mode or a wake-up changeinteraction in a general mode.

The mobile device may identify an activation setting state of a powersaving mode when interaction for changing a mobile device from a sleepstate to a wake-up state is input The mobile device may support wake-upstate change in a power saving mode according to whether the interactionis a wake up change interaction in a power saving mode or a wake upchange interaction in a general mode when the power saving mode isactivated.

The user may use a certain function or check certain contents morefrequently than other functions when waking-up a mobile device. Forexample, the user may wake up the mobile device to check the time or tocheck E-mail or other messages. In a mobile device of the related art,the entire display unit 100 is operated as an operating region, andunnecessary functions enter a stand-by state to cause power consumptionand use of an unnecessary resource.

According to an exemplary embodiment of the present invention, themobile device supports wake-up state change according to a power savingmode. Accordingly, the mobile device may operate only a part (e.g., ¼)of the display unit 100 as the operating region 600 to reduce powerconsumption. The mobile device may enter only preset functions in theoperating region 600 to prevent an unnecessary resource from being usedand to improve initializing operation speed.

FIG. 3 is a flowchart illustrating a control operation of a mobiledevice for reducing power consumption when the mobile device wakes upaccording to an exemplary embodiment of the present invention.

Referring to FIG. 3, the mobile device enters a sleep state in step 301.In step 303, the controller 300 detects an interaction requesting changeof a mobile device from the sleep state to a wake-up state. For example,the controller 300 may detect the interaction based on user input or acommunication event in a sleep state where a display unit 100 is turnedoff and functions of a system are not operated.

The controller 300 determines whether a power saving mode is set whenthe interaction is detected in a sleep state in step 305. For example,the controller 300 may determine whether the power saving mode isactivated or deactivated.

If the power saving mode is deactivated (NO of step 305), the controller300 may control execution of a corresponding operation in step 307. Forexample, as illustrated in step 319 to step 325, the controller 300 maycontrol an operation of the display unit 100 according to a general modeand a booting procedure of a system.

If the power saving mode is activated (YES of step 305), the controller300 may identify a type of input interaction in step 309. For example,the controller 300 may determine whether the input interaction is forwake-up state change according to the power saving mode (power savinginteraction) in step 311 or for wake-up state change according to ageneral mode (general mode interaction) in step 319. In FIG. 3, thepower saving interaction and the general mode interaction may be setaccording to an input time of a certain function key (e.g., hot key).For example, the controller 300 may determine that the power saving modeinteraction refers to a case where a hot key is held down (orcontinuously input) for less than a preset threshold time (hot key shortpress) in step 311. The controller 300 may determine that the generalmode interaction refers to a case where a hot key is held down (orcontinuously input) for longer than a preset threshold time (hot keylong press) in step 319.

The power saving mode interaction and the general mode interaction maybe distinguished from each other according to whether a previouslyallotted certain function key (e.g., power saving mode key) is input asillustrated in FIG. 2. For example, interaction due to a power savingmode key may be determined as power saving mode interaction. Interactionby a key other than the power saving mode key or interaction byreception of a communication event may be determined as general modeinteraction. In addition, the power saving mode interaction and thegeneral mode interaction may be set by communication events. The powersaving mode interaction and the general mode interaction may be set asinteraction based on user input and interaction based on a communicationevent, respectively. When the power saving mode is set to an activestate as illustrated earlier, step 309, step 319 to step 325 may beomitted. When the mobile terminal is operated by separation of theinteraction regardless of a setting state of a power saving mode, step305 and step 307 may be omitted.

If the interaction is the power saving mode interaction in step 311, thecontroller 300 controls display of a power saving home screen in step313. For example, the controller 300 may display a part of entiresections as an operating region 600 and remaining sections as anon-operating region 500 though partial on/off of the display unit 100as illustrated in state 205 in FIG. 2. The controller 300 may displaypredetermined defined items on the operating region 600.

When the power saving home screen is displayed, the controller 300 waitsfor only a system function according to a user menu set in the operatingregion 600 in step 315. For example, as illustrated above, thecontroller 300 controls stand-by states only for functions correspondingto menu items registered in the operating region 600 among functionssupported from a mobile device as illustrated previously.

The controller 300 may control execution of a requested operation instep 317. For example, the controller 300 may control execution based ona menu item given through a power saving home screen after wake-up statechange based on a power saving mode and display of an execution screenthereof through a foregoing procedure. The controller 300 may controlchange from a power saving home screen according to a power saving modeto a home screen according to a general mode according to userinteraction.

If the interaction is general mode interaction in step 319, thecontroller 300 may control display of a home screen in step 321. Forexample, the controller 300 may display a home screen by using theentire screen of the display unit 100 as the operating region asillustrated in state 203 of FIG. 2.

When the home screen is displayed, the controller 300 waits for allsystem functions supported from the mobile device in step 323. Thecontroller 300 may control execution of a requested operation in step325. For example, the controller 300 may control execution based on amenu item given through a home screen after wake-up state change basedon a general mode and display of an execution screen thereof through aforegoing procedure. The controller 300 may control change from a homescreen according to a general mode to a power saving home screenaccording to a power saving mode according to user interaction.

A saving mode operation for reducing power consumption according to anexemplary embodiment of the present invention may be implemented in anexecutable program command form by various computer means and berecorded in a non-transitory computer readable recording medium. In thiscase, the non-transitory computer readable recording medium may includea program command, a data file, and a data structure individually or acombination thereof. The program command recorded in a recording mediummay be specially designed or configured for the present invention or beknown to a person having ordinary skill in a computer software field tobe used. The computer readable recording medium includes magnetic mediasuch as hard disk, floppy disk, or magnetic tape, Optical Media such asCompact Disc Read Only Memory (CD-ROM) or Digital Versatile Disc (DVD),Magneto-Optical Media such as floptical disk, and a hardware device suchas ROM, Random Access Memory (RAM), flash memory storing and executingprogram commands. Further, the program command includes a machinelanguage code created by a complier and a high-level language codeexecutable by a computer using an interpreter. The foregoing hardwaredevice may be configured to be operated as at least one software moduleto perform an operation of exemplary embodiments of the presentinvention, and a reverse operation thereof is the same. While it isunderstood that some of the operations of the mobile device may beimplemented in software, it would also be understood that at least someoperations or units of the mobile device would need to be implemented inhardware in order to carry out their function.

While the invention has been shown and described with reference tocertain exemplary embodiments thereof, it will be understood by thoseskilled in the art that various changes in form and details may be madetherein without departing from the spirit and scope of the invention asdefined by the appended claims and their equivalents.

What is claimed is:
 1. A method for reducing power consumption in a mobile device, the method comprising: detecting a change of a state of the mobile device from a sleep state to a wake-up state, the sleep state being a non-driving state in which a display of the mobile device is turned-off and system functions of the mobile device are not operating other than receiving at least one of a user interaction or external communication interaction for changing from the sleep state to the wake-up state; identifying a setting state of a power saving mode of the mobile device; controlling a wake-up state change of the mobile device from a sleep state to the wake-up state in a state of the power saving mode; partially turning-on the display of the mobile device such that a first section of the display displays an operating region if the state of the mobile device is changed from the sleep state to the wake-up state; and waiting for a request for executing a system function according to a user menu set in the operating region, wherein the system function is at least one item presented on a main menu of the mobile device.
 2. The method of claim 1, wherein the first section comprising at least one portion of the display and less than an entire screen of the display.
 3. The method of claim 2, wherein the partially turning-on the display of the mobile device comprises: turning on the first section of the display and turning off a remaining section of the display, the remaining section including any portions of the display that are not part of the first section; determining the first section as an operating region and the remaining section as a non-operating region; and outputting a power saving home screen through the operating region.
 4. The method of claim 3, wherein the outputting of the power saving home screen comprises providing at least one item corresponding to a user setting menu to the operating region.
 5. The method of claim 4, wherein the waiting for the request for executing the system function comprises waiting for a predetermined system function corresponding to the at least one item.
 6. The method of claim 3, wherein the detecting of the change of the state of the mobile device comprises: detecting an interaction for change from the sleep state of the mobile terminal to the wake-up state; and identifying a setting state of the power saving mode when the interaction is detected.
 7. The method of claim 3, wherein the identifying of the setting comprises: detecting an interaction for change from the sleep state of the mobile terminal to the wake-up state; and determining whether the interaction is a wake-up change interaction according to one of the power saving mode and the general mode when the interaction is detected.
 8. The method of claim 3, wherein the detecting of the change of the state of the mobile device comprises: detecting an interaction for change from the sleep state of the mobile terminal to the wake-up state; identifying a setting state of the power saving mode when the interaction is detected; and determining whether the interaction is the wake-up change interaction according to one of the power saving mode and the general mode when the power saving mode is activated.
 9. A method for reducing power consumption in a mobile device, the method comprising: detecting a change of a state of the mobile device from a sleep state to a wake-up state, the sleep state being a non-driving state in which a display of the mobile device is turned-off and system functions of the mobile device are not operating other than receiving at least one of a user interaction or external communication interaction for changing from the sleep state to the wake-up state; identifying a setting state of a power saving mode of the mobile device if the state is changed; turning-on an entire screen of the display to display an operating region based on a general mode if the power saving mode of the mobile device is deactivated; turning on a first section of the display to display an operating region based on the power saving mode if the power saving mode of the mobile device is activated, the first section comprising at least one portion of the display and less than an entire screen of the display; and waiting for a request for executing a system function according to a user menu set in an operating region based on the power saving mode, wherein the system function is at least one item presented on a main menu of the mobile device.
 10. A mobile device for reducing power consumption, the mobile device comprising: a display configured to display data; and at least one processor configured to: control to display a first section of the display when the mobile device is changed from a sleep state to a wake-up state according to a power saving mode, the first section comprising at least one portion of the display and less than an entire screen of the display, detect a change of a state of the mobile device from a sleep state to a wake-up state, the sleep state being a non-driving state in which the display is free of the data being driven to the display and system functions of the mobile device are not operating other than receiving at least one of a user interaction or external communication interaction for changing from the sleep state to the wake-up state, identify the power saving mode of the mobile device, and based on detecting the change of the state of the mobile device from the sleep state to the wake-up state and identifying the mobile device is in the power saving mode: drive the data to the first section of the display, such that a first section of the display displays an operating region, and receive a request for executing a system function according to a user menu set in the operating region, wherein the system function is at least one item presented on a main menu of the mobile device.
 11. The mobile device of claim 10, wherein the first section comprising at least one portion of the display and less than an entire screen of the display.
 12. The mobile device of claim 11, wherein the display is further configured to: drive the data to the first section of the display when the mobile device is changed from the sleep state to the wake-up state according to the power saving mode, drive other data to a remaining section of the display, display an operating region in the first section, and display a non-operating region in the remaining section, and wherein the remaining section includes any portions of the display that are not part of the first section.
 13. The mobile device of claim 12, wherein the display is further configured to display at least one item corresponding to a user setting menu in the operating region.
 14. The mobile device of claim 13, wherein the at least one processor is further configured to control waiting for a predetermined system function corresponding to the at least one item.
 15. A method of reducing power consumption in a mobile device, the method comprising: determining whether an input for changing a state of the mobile device from a sleep state to a wake-up state is received, the sleep state being a non-driving state in which a display of the mobile device is turned-off and system functions of the mobile device are not operating other than receiving at least one of a user interaction or external communication interaction for changing from the sleep state to the wake-up state; identifying a setting state of a power saving mode of the mobile device; if the mobile device is changed to the wake-up state of the mobile device in a state of the power saving mode is activated, turning on only a first section of the display of the mobile device, and displaying a predetermined user interface in the first section, while not turning on a remaining section of the display; and if the mobile device is changed to the wake-up state of the mobile device in a state of the power saving mode being deactivated, turning on the entire display of the mobile device, and displaying a predetermined user interface on a screen of the display, wherein the first section includes at least one portions of the display and less than an entire screen of the display, and the remaining section includes any portions of the display that are not part of the first section, and wherein the predetermined user interface consists of at least one item presented on a main menu of the mobile device. 